Dielectric filter having intrinsic inter-resonator coupling

Details Dielectric filter having intrinsic inter-resonator coupling Dielectric filter having intrinsic inter-resonator coupling

1995-04-28

1998-09-22

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, H01P 1205

Patent

active

058120360

ABSTRACT:
A filter comprising a plurality resonator stages between sequentially coupled between input and output ports. The resonator stages are arranged such that at least one non-sequential pair of stages are physically adjacent. The non-sequential pair of resonator stages are separated by a common internal wall, which defines a bypass coupling aperture therebetween. During operation of the filter, attenuation poles are formed in the filter response due to bypass coupling between the non-sequential pair of resonator stages through the bypass coupling aperture. The preferred U-shaped arrangement of the resonator stages enables the formation of attenuation poles, without using an external bypass connection, by permitting inductive or capacitive bypass coupling through the bypass aperture.

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patent: 5410284 (1995-04-01), Jachowski
patent: 5608363 (1997-03-01), Cameron et al.

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